arch/sparc/include/asm/hugetlb.h

   1 #ifndef _ASM_SPARC64_HUGETLB_H
   2 #define _ASM_SPARC64_HUGETLB_H
   3
   4 #include <asm/page.h>
   5 #include <asm-generic/hugetlb.h>
   6
   7
   8 void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
   9                      pte_t *ptep, pte_t pte);
  10
  11 pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
  12                               pte_t *ptep);
  13
  14 static inline int is_hugepage_only_range(struct mm_struct *mm,
  15                                          unsigned long addr,
  16                                          unsigned long len) {
  17         return 0;
  18 }
  19
  20 /*
  21  * If the arch doesn't supply something else, assume that hugepage
  22  * size aligned regions are ok without further preparation.
  23  */
  24 static inline int prepare_hugepage_range(struct file *file,
  25                         unsigned long addr, unsigned long len)
  26 {
  27         if (len & ~HPAGE_MASK)
  28                 return -EINVAL;
  29         if (addr & ~HPAGE_MASK)
  30                 return -EINVAL;
  31         return 0;
  32 }
  33
  34 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
  35                                          unsigned long addr, pte_t *ptep)
  36 {
  37 }
  38
  39 static inline int huge_pte_none(pte_t pte)
  40 {
  41         return pte_none(pte);
  42 }
  43
  44 static inline pte_t huge_pte_wrprotect(pte_t pte)
  45 {
  46         return pte_wrprotect(pte);
  47 }
  48
  49 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
  50                                            unsigned long addr, pte_t *ptep)
  51 {
  52         pte_t old_pte = *ptep;
  53         set_huge_pte_at(mm, addr, ptep, pte_wrprotect(old_pte));
  54 }
  55
  56 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
  57                                              unsigned long addr, pte_t *ptep,
  58                                              pte_t pte, int dirty)
  59 {
  60         int changed = !pte_same(*ptep, pte);
  61         if (changed) {
  62                 set_huge_pte_at(vma->vm_mm, addr, ptep, pte);
  63                 flush_tlb_page(vma, addr);
  64         }
  65         return changed;
  66 }
  67
  68 static inline pte_t huge_ptep_get(pte_t *ptep)
  69 {
  70         return *ptep;
  71 }
  72
  73 static inline void arch_clear_hugepage_flags(struct page *page)
  74 {
  75 }
  76
  77 void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
  78                             unsigned long end, unsigned long floor,
  79                             unsigned long ceiling);
  80
  81 #endif /* _ASM_SPARC64_HUGETLB_H */